%0 Journal Article %A V. G. Nazarov %T Using critical numbers in the problem of identifying an unknown substance %J Dalʹnevostočnyj matematičeskij žurnal %D 2024 %P 235-251 %V 24 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DVMG_2024_24_2_a7/ %G ru %F DVMG_2024_24_2_a7